[pptp-server] mppe working

[robert]

On Thursday 26 April 2001 12:05, Steven Pritchard wrote:
> Gill, Vern said:
> > For anyone who's having trouble with MPPE on 2.4.x and ppp-2.4.x, I
> > suggest you visit my site at http://linus.yi.org, and click on the
> > PPP page. I have had pptpd running under kernel 2.4 and ppp 2.4 for
> > months now.
>
> Have you tested this with Windows 98/ME/2000 clients?  In my testing,
> I have either been able to get 98/ME working *or* 2000, but not both.
>
> Steve

See the 2.4 kernel howto at http://home.swbell.net/berzerke  From that howto:

5.23    Q: I'm having problems with Windows 98SE/ME or Windows 2K running
at the proper encryption level.  What's going on?
 
        A: For Windows 2K, problems have been reported if you have the
line [mppe-40] in the options file.  Commenting it out seems to fix the
problem.  You can also try the alterative options file listed above.
 
For Windows 98SE (and probably ME), it is the exact opposite.  If you
don't have the line [mppe-40], then the client will connect and negotiate
MPPE 128 bit, but pppd spews messages like these for all traffic:
 
    Apr  9 11:34:00 ra0 pppd[9521]: rcvd [Compressed data] 90 00 bb 5c a3 2d 
a7 0d ...
    Apr  9 11:34:04 ra0 pppd[9521]: rcvd [Compressed data] 90 01 c3 1a 0e cb 
c2 29 ...
 
No traffic actually goes across the link.  Adding "mppe-40" to
/etc/ppp/options makes everything work perfectly. The clients still
negotiate MPPE 128 bit.

The alternate options file is (delete the [ and ]'s):

[name *]
[lock]
[mtu 1490]
[mru 1490]
[proxyarp]
[auth]
[+chap]
[+chapms]
[+chapms-v2]
[ipcp-accept-local]
[ipcp-accept-remote]
[lcp-echo-failure 3]
[lcp-echo-interval 5]
[deflate 0]
[mppe-128]
[mppe-40]
[mppe-stateless]